Effect of growing period on quality of flax fiber

Flax fibers with different growing time in Xinjiang were harvested and studied in order to enhance the quality of flax.The component and mechanical properties were analyzed after these flax were pretreated and infrared and X-ray diffraction were also used in comparisons.The relation between quality and growing time was brought out.The results indicated that components of water soluble substance,pectin and hemicellulose reduce with growing time increasing, and the trend of components of lignin and cellulose is contrary to that of the former.Fineness and length of fiber increase with growing time prolonging,while tenacity and modulus ascend firstly and then descend,the turning point is blossom.Therefore,one week after blossom is the optimal growing time.